Macrophotograph of a small portion of a Cactus quartz (a.k.a. Spirit quartz) crystal cluster with purple amethyst. The orange coloration is due to iron oxidation and small iron inclusions can be seen in the matrix of many of the crystals. From the Magaliesberg Mountains of South Africa. Image #4115 3097 X 4693 pixels
Macro photograph of a polished slab containing chrysocolla (blue) and malachite (green) from the Bagdad copper mine in Arizona Image #3169 4772 X 3187 pixels
Macrophotograph of a Stone Canyon rock slab; a combination of brecciated jasper in an agate matrix; from California Image #4092 4800 X 3200 pixels
